Peephole box



Oct.'16, 1,945. c. Fos'rER y PEEP HOLE ofXy Filed March 29. 1943 2 sheets-'sheet 1 Ileemmlllllllll Oct. 16, 1945. c. FOSTER PEEP HOLE Box Filed Maren .29, 1943 :a sheets-sheet;

` l l INVENTOR BY 1 y Patented Oct. 16, 1945 PEEPHOLE BOX Carl Foster, East St. Louis, Ill., assignor to Ameriy can Steel Foundries, Chicago, Ill., a corporation of New Jersey Application March 29, 1943, Serial No. 480,902

7 claims.

ed lin a wall of a furnace and which may provide "a peep hole therethrough affording access to a Vfull View of the interior of the furnace.

,l Myinvention relates to furnaces and the like Vand particularly to a device which may be mountlike andV which may bev cooled by means of any vsuitable liquid which may be circulated therethrough in order to maintain the device at such a temperature that it may be readily usedA by v.furnace men without danger of burns.

A further object of my invention is to design a peep hole member having a peep hole therethrough and a liquid chamber therearound, said chamber being provided with inlet and outlet pipes and said peep hole being provided with a cover plate which may be pivotally or slidably mounted in the peep hole member,A as desired. l

-In the drawings, Figure 1 is a front elevation of the preferred. embodiment of my novel peep hole device and Figure 2 is a side elevation taken from the left as seen'in. Figure l.. Figure 3 is a side elevation of the cover plate shown in Figures l and 2.

Figures 4 to 7 inclusive show a modified form of my invention, Figure 4 being a frontelevation of the peep hole devi-ce, Figure 5 being Ia side elevation taken from the right as seen in Figure :f

4, Figure 6 being a front elevation of the cover plate and Figure 7 a sectional view taken approxmately in the vertical plane bisecting the device as indicated by the line 1 1 of Figure 4.

Describing my invention in detail and referring first to the embodiment thereof shown in Figures 1 to 3 inclusive, my novel peep hole device or box may comprise a plate 2 of any convenient form, here illustrated as substantially rectangular, and said plate may be provided with a round opening 4 therethrough to the margin of which a pipe 6 may be conveniently secured as by welding. A pipe 8 may be mounted around the pipe 6 and may be welded or otherwise secured to the adjacent face of the plate 2, and an annular plate I0 (Figure 2) may be secured as by welding to the ends of the pipes 6 and 8 remote from the plate 2 to define therewith and with said pipes an annular chamber I2, said chamber being liquid tight.

Inlet and outlet pipes I4 and I6 may communicate with the chamber I2 and may be disposed at opposite sides of a plate I8, said plate I8 affording a division Wall within the chamber I2 in order to prevent direct circulation of liquid between` the inlet and outlet pipes I4 and I6 as will be readily apparent. It may be noted, as best seenY in Figure 1, that the pipes I4 and I6 may be disposed slightly above the bottom of the chamber I2 in order that rust and. dirt may collect in the bottom of said chamber without plugging said inlet and outlet pipes. It Vwill be understood that cooling liquid may be forced through the inlet pipe I4 by any convenient means, such as a pump (not. shown), said liquid being circulated around the chamber I2 and being afforded an outlet by meansof the pipe I6.

The plate 2 may be provided with any convenient means such as holes I9, I9 therethrough affording securement therefor to the wall of an associated furnace or the like, and it will be readily apparent that the pipes 6 and 8 will project into an opening through the wall of the furnace to afford a peep hole therethrough. A cover lplate 20 may be pivotally mounted at 22 on the plate 2 and may be provided with a handle 24 by means of which the cover may be pivoted to one sideof the opening 4, permitting a view of the inside of the associated furnace through the pipe 6 which thus affords a peep hole as above described.

Amodication of my invention is shown in Figures 4 to '7 inclusive wherein the peepl hole device or box may comprise a platev52 corresponding to Ythe plate 2 of the previousl modification and affording securement for the box to the Wall of an associated furnace. The plate 52 .may be provided with around opening 54 therethrough and inner andouter telescoped pipes 56 and 58 may bewelded respectively to the margin of the opening 54 and to the adjacent side ofthe plate 52.

An annular plate 60 may be welded to the ends of the pipes 56 and 58 to define therewith and with the adjacent'surface of the plate 52 an annular liquid. chamber` 62 which may be provided with inlet and outlet pipes 64 and 6B.

A pair of L-section members 68 and 'I0 may be welded to the outer face of the plate 52 to define therewith channels for the slidable reception of a cover plate 12 having a handle 14 for convenient actuation thereof, and a bar 16 may be welded to the plate 52 adjacent one end of the members 68 and I0 to afford stop means for the cover plate 12 as it is moved to the left as shown in Figure 4 to closed position over the opening 54. It will be understood that in this embodiment of my invention, similarly to the previous of the associated furnace; and cooling liquid may be circulated through the chamber 62 by means of the inlet and outlet pipes 64 and 66 to preserve the device and to maintain the same at a temperature whereby it may conveniently be used by furnace men without risk of burns.

It is to be understood that I do not wish to be limited bythe .exact embodimentsof the .device shown Whichfa'rejmerely by wayfof` illustratir'm and not limitation as various other forms of the device will, of course, be apparent to those skilledu in the art without departing from the spirit of the invention or the scope of the claims.-

I claim:

a round opening therethrough, a pipe welded to said plate, another pipe withinsaid ,first-men--,

chamber around said peep hole, and duid inlet and outlet openings through one of said plates Acommunicating with said chamber.

y .In a-fabricated peep hole box, a pair of I- spaced plates with aligned openings therethrough,

apipeiwelded at opposite ends thereof to respective platesA` around said openings and affording tioned pipe and welded to saidv plate around said opening, said pipes being spaced from each other' and defining an annular duid chamber therebetween, an annularl plate spaced from 'said iirstmentioned' plate, said second-mentioned plate being VVwelded at its outer` and inner perimeters respectively to said firstand second-mentioned pipes, and liuid inlet 'andoutlet openingsthrough said'rst-'mentioned plate communicating with said chamber. v

v' 2". In' a fabricated peep hole box, a plate with around opening therethrough," a pipe'welde'd to said plate, another pipe within said first-mentioned pipe and welded to said plate'laroun'd the Amargin of said opening, saidppes being spaced from each other and dening an annular iluid chamber therebetween, an annular plate spaced :from said first-mentioned plate, Isaid secondmentioned plate being welded at its outer and inner ,perimeters respectively to said first and second-mentioned pipes, fluid inlet and outlet openings through said first-mentioned plate corn- 'municating with said chamber, and other openings through said first-mentioned plate spaced from said chamber and formedand arranged for the reception of means for securing said box to an vassociated furnace wall.

3.' In a fabricated peep hole box, a plated'with around opening therethrough, a pipe Welded t0 said plate,- another pipe within said first-mentionedpipfe and Welded to said1 plate around the margin of said opening', said pipes'being spaced from 'each other and defining an annular iiuid chamber therebetween, an annular plate spaced from said first-mentioned plate, said secondmentioned plate being weldedat Vits outer'and inner .perimeters respectively to said rst and 'second-mentioned pipes, uidinlet Vand outlet openings through said first-mentioned plate cornn `municatin'g with said chamber, and a plate between said inlet and outlet openings welded to both of said'pipes and to both of said plates to aford a division wall preventing circulation of therewith'a peep hole through the box, another pipe -around said rst-mentioned pipe and welded to said plates, said pipes being spaced from each other and deriinlcg,therebetweenaV uid chamber around said peep hole, fluid'inlet and outlet openings 't'hough onev of said plates vcommunicatir1g 'with said chamber, said openings being disposed closely adjacent each other, and a' plate between said openings welded to both of said` pipes, and to, both of said plates to afordpa division -wall preventing circulation of fluid between said inlet and outlet openings in one direction around said chamber. Y 'b '6. In a fabricated peep hole box, a pair rof spaced plates with aligned openingsv therethrough, a pipewelded at opposite ends thereof to respective plates around said openings and affording therewith a peep hole through the box, another pipe around said first-mentioned pipe and welded to said plates, said pipes being spaced from each other and dening therebetween a fluid chamber around said peep hole, iluid inlet and outlet openings through one of said plates communicating with said chamber, and a pluralityof openings throughsaid plate lspaced from said chamber, said last-mentio'nedI openings being 'formed and arranged for the reception of means for securing said box to an assoeiatedfurnace wall.

'7. In a fabricated peep hole box, a pair of spaced plates with aligned openingstherethrough,

Aa pipe welded at Opposite endsthereof to respec- 

